Viking FDB451 - Page 13

System Diagnosis
©2012 Viking Preferred Service 13
Fail Codes (cont'd)
LED 1
Pots Pans
LED 2
Normal Wash
Service
Cycle Only
Error Code Cause Action / Possible Root Cause(s)
4 1
Temperature
Sensor Error
Temperature sensor
reads out of range
1. Wires disconnected to temperature sensor
2. Defective temperature sensor
3. Defective control board
4 2 X
Wash Heater
Error
Wash heater current
sense is out of range
1. Wires disconnected between main control and wash heater
2. Defective wash heater
3. Defective main control
4. Defective temperature sensor
4 3 X Dispenser Error
Dispenser current sense
is out of range
1. Wires disconnected between main control and dispenser
2. Defective dispenser
3. Defective main control
4 4 X
Inlet Valve
Error
Inlet valve current sense
is out of range
1. Wires disconnected between main control and inlet valve
2. Defective inlet valve
3. Defective main control
4 5
Fill too Fast
Error
Pressure sensor reaches
the fill level too fast
(abnormal pressure
sensor change)
1. Make sure that unit is level front to back and side to side
2. Verify the house water pressure is within specifications
3. Defective inlet valve
4. Defective pressure sensor
5. Defective main control
5 1 X Vent Error
Vent current sense is out
of range
1. Wires disconnected between main control and vent
2. Defective vent
3. Defective main control
5 2 X Blower Error
Blower current sense is
out of range
1. Wires disconnected between main control and blower
2. Defective blower
3. Defective main control
5 3 X
Dry Heater
Error
N/A on 451 model
1. Wires disconnected between main control and dry heater
2. Defective dry heater
3. Defective main control
5 4 X
Current Sense
Error
Main control reads
current draw
when no loads are active
1. Defective main control
2. Defective wire harness
5 5 Internal Error
Main control or UI detects
a board
level failure
1. Defective main control
2. Defective user interface
Moisture
Sensor - water
detection
Moisture sensor output is
equivalent
to water in the pan
1. Water in base pan from overflow / leak
2. Defective moisture sensor
AC Power Loss
Power loss occurred
during a
running cycle
1. Power lost during a cycle
2. Reset by pressing and holding start for 3 seconds
Flash both LED1 and
LED2 continuously
Flash all LEDs but start
and run continuously